Barking-mill.



G. SGHEANGK. BARKING MILL.

APPLICATION FILED NOV. 24,1913.

Pagna'nec. s, 19,14.' f

i FFICE6g mwmmnmummm.

GARREI HENCIFLUF MILLNOCKET, MAINE.

AR-KING-MELL team rar-ear.. 'atengted Dec. 8, ille.

Application tiled November ESL?. Serial No. 2,586.

VTa all .whom it may yconcern Be it .known that I, Gananr Sci-iiiNoK, a

citizen of-r the United States, residing at Millino'cket, the ycounty of leiiobscot and State ofMaine, have invented an Improvement in BarkingMills, of lwhich the followin is a specification. f

`his invention relates to barking mills for removing the bark from blocks oit Wood which arel used inthe production oi pulp 'for the manufacture of paper.

The-invention has t'or its object the pro -duction of `a mill adapted 'for continuous opo eration, the wood blocks being ted in at one end and discharged from the other lend also, the production of ainiill' involving a new principle'if-operation, in that the bark is removed from the'blecks by a tumbling action in the open air andthe bai-k which `-fromI the mill by gravity, the barking-operais .removed `i'roin the blocks is discharged tion being a dry one instead of a, wet one In one embodiment of such as heretofore practised. l my invention, which is here shown for the sake of 4illus- `tration, a` long tumbling-chamber is employed, which is open at its ends, to admit `and has openings arranged at Aintervals throughout-its length, throughv which the detached pieces of bark escape by gravity.

' .Y Figure l is a side elevation of a barking mill embodying this invention. Fig. l a right hand end-view of the inill. Fig.4 3 is a Sectional detail ot said right hand end-por` tion of themill. Fig. fl a left-hand endview ofthe mill. Fig. 5 is a sectional detailr ofl said'lettdiand end-portion of the In the embodiment oit' my invention shown VirrFig. l', the tumblingchainber consists ol Afour cylindrical pipcscctions l0, 12, 14 and 16, although any other number maybe em ployed. Each section may be composed ot several short cylindrical sections of pipe telescopically arranged and secured together'` or tbev may be otherwise constructed. The several pipe-sections l0, 1Q, 14 and -16 are arranged in alincment to enable the blocksto nieve :tromv one to the next sec' tion throughout the entire lengthof the mill, and said sections are arranged in a slightly yinclined position to facilitate such movement of the blocks, and they are separated from each other short distances to provide openings through which the pieces of bark fall by gravity. As the pieces of bark which are knocked oit of the blocks 'vary greatly in size, and it is necessary to provide for the escape oi the largest pieces, these openings, which it will be observed, are coextcnsive with the entire circumference of the sections, are amply sufficient; and furthermore, as they are arranged transversely with respect to the sections, they provide 'for the quick and complete discharge oit the pieces ot bark, which have accumulated in the sections in rear of them, as the sections rotate. However, it is obvious that the openings may be otherwise formed and arranged, and it it is not desired to discharge the detached bark throughout the length of the mill, the openings may be omitted, although the cfliciency of the mill is diminished. .The pipe-sections, which serve as the tumbling or deba rking sections are preferably iinperliorate, and their in* tei-ier vwalls are made smooth or devoidA of projections or indcntations` which admits oi the blocks and the detL ched bark being easily moved along in a direction toward the exits thereof, whcretthe detached bark is discharged, and such construction is of advantage for the reason, that the blocksV are prevented from clogging, and pieces or libers oi? the wood are not chipped oil during the tumbling action. Furthermore such construction oi' mill provides Jfor successively dischargiugg thc'dctached bark at intei-vals, and such successivo operations enables the employment ot large discharge openings t'or the detached bark, and is contrusted with a mill. wherein the debarking and discharging operations are both substantially continuous. i

In the mill, as represented in Fig. l, the right hand end thereofis the inlet, and at kaid end an annular plate iti is secured having a center-holc E20, through which the wood blocks are icd in. Said plate partially closes the eudoi the pipe-.section to which `it is attached, and serves as a retaining-plate tor the blocks. The lett hand end et the mill is the. exit and at said end an annular plate@ is provided having a center-hole 24 through which the woodv is attached, and serv/es as a retaining-plate i' tion as is the plate 18, but is supported in :for the blocks.- Said plate 22 is not' attached directly te the end of the pipe-seciXed position infront of Asaid plpe-'section by brackets26, thereby roviding an opening between the end of t e pipe-section and the plate for'thev escape of the pieces of bark, said opening being substantially the same as the openings before described, which 4vare arranged at intervals along the chamber. Each pipe-section has arranged on its circumference flanged rings i30, there being two such rings shown on each pipe-section which are arranged in parallel relation, and dis osed near the ends of the sections, and sai rings rest upon flanged rollers 32 secured to shafts 33, which are positively rotated. The weight of the pipe-sections, particularly when loaded '.with the wood blocks, is suflicient to enable them to be rotated by frictional engagement with the rotating rolls, although 1n lieu of friction gearing such as described any other form of gearing may be em loyed for r'Qtatin the pipe-sections. As ere shown, it wi be noted that the pipe-sections are made independent of each other and are, therefore, independently rotatable but ordinarily they will berotated in unison, as they are rotated by means common to all of them, but'indeendent rotation of the sections, instead of Being a disadvantage, is an advantage as the blocks which extend across the openings are so interlocked with other blocks in the sectionsthat independent movement of one section relative to the other will accelerate the tumbling of the blocks.

The peration of the mill is as follows While ghe tumbling-chamber is rotating the Wood blocks are fed in through the centerhole in the retaining-plate at the upper end and are caused to tumble over and upon each other, and against the wall of the' chamber and to move along to the lower end thereof, where they are discharged through the center-hole in the retainingplate thereat, and while being tumbled and moved along the bark is removing from them, and the pieces of bark fall by` gravity through the openings.

It will be observed that the several p'pey sections composing the tumbling-cham are loosely and independently lsupported upon the friction driving rolls and may be separately removed therefrom for any de-l sired purpose; and that the open spaces between the sections are continuous, so that the pieces of bark are free to fall all the time the chamber is rotating.

I claim if;

1. A barking mill consisting of a long having retaining said open ends an having an opening 1mble over and upon eachother and against the wall of the chamber and to'inove them from one to the other end of the chamber, said chamber being devoid of block-clo ing and chipping-portions, substantially as l escrlbed. 2. A barking-mill ,consisting of `a long tumbling-chamber, comprising a plurality of tumbling-portions, said chamber being open at its ends to receive the blocks at one end and ermit .of their discharge from the other en andl arranged in a slightly inclmed position, and. said 'chamber having f openings at intervals, widely spaced apart, and means to rotate said chamber slow y to cause the blocks to tumble over'and. upon each other and against the walls of the tumbling-portions, and to move them vfrom one" to the other end of the chamber across the openings, whereby the bark-disc ai" "goperations are successively and re' ate ly .performed, substantially as descn ed.

3. A" barkin mill consisting of a, long t9 re permit of recharge from the other end, and lates partially closing tumbling-cham er, open at its ends cielive t e blocks at one end and t eir mediately in rear of the retaining-plate fat the exit, which 1s substantially coexten sive with the c1rcumferenceof the chamber, said chamber' being arranged in a slightly inclined position, and means to rotate said chamber slowly to cause the blocks to tumble over and upon each other and against 1ers the wall of the chamber and to move them from one to the other end of the chamber, substantially asy described. 'l

4. A barking-mill consisting of ak lonja;v tumbling-chamber, open at its ends to receive the blocks at one end and permit of their discharge from the other end and having its interior wall devoid of block-'clogl ging and shipping portions, said chamber being arranged in a slightly inclined posi-` chamber, across the'openings, and cause the j detached bark accumulating in the tumbling-portions of the chamber to. escape at' the openings, substantially as described.'K

5. A. barking mill consisting of along cylindrical open-ended tumbling-chamber, rotatable about an axis slightly inclined'to the horizontal, and having long nalorvirV iso i seid skein-bei.' te tu spes eeeii ether eliembeg :mil tei elle teem trein elle tile other end et the ebember, escl cease the piece of iieteiflieil ber-li te fall. 4 :ty time-egli the openings substatiileseribei. f

6. ybzirlqing mill eeiisistiiig @it e lang; epeiee' eliemaiie ie'teteble about exis sl tl?, incline@ te tlielisi-i- Hentai, :imi bevi c nziirew elongated spelt eiieiigerl et intervals and. te retztte saici eliembei te tumble tbe blocks over 'and spele eeeli ether against 'die Wall et tbe chamber, 21ml te move them along Fzom one te the atleet emi of the ebeiiiben and @euse tiie 'pieees el? (iets elle-sl berk te 'all by gevity tliieugi the @pesiugs si staiiteliy es rieeciibefi.. l

'7., bein-ling mili eeiisisiiig et e. lenig o'peiienflf-cl tumbling; el'iember ietetsible about en axis elilitly iiieliiieil iii. the hert zentel, i lievi narrow eongetel @perf ings ertengeii et ieteivels ti'eiisirei'sely with .inspect 'te the ebembei', and te i'otfite seid Chamber 'te tambie tbe will of tbe mem iii/oi treni one to the other evil ef @lie chamber, a il muse the pieces el. i @heil berk te fell by ;grm' through. einem.' les; substantially described.

eumfeieiiee semi ill., lle beliiig; mill the e :pluieiity oit open-ende; p

iii eimement :incl iii e,

eliziei sesitioil, sepa irme es li other short distances te pew/,Lee epee spaces be tweei :iisd meme ce ietzite tbe seeover and e plurality of openendecl tumblingl sections arranged in elinement with openings between them, Clrivingmeans e0extensive with all seifl sections with which the sectiene are connected. by fi'ictiolial engaging `iifieiuigsubslmitielly as described.

i4. En e .barking milli the combination of e plurality of pipesections eiiain'ged. in elinement sind in :i slightly inclined position, annuler plates with center-holes arizinge et the outer encls of the end-sections te partially close them, the annuler plete at the discharge end being supported a short rfi'stsnee from the section te which it is sttueliefl te provide :in open space between it and the section7 and means to rotate all of the sections, substantially as descl'ibefl.

l5. A barking; mill*consisting,r of a. long tumbling chamber open at its ends to receive the blocks at one end, and permit of their iliselia.. from the other end, sind arranged vin sligiitly inclined "position, ind having u, 'fiel-few opening adjacent exit, which is testislly ce-eite3nsive with the ciie'uii.- esce et the chamber, tln'ougli 'which the dem. pieces of berk fell by gravity, and means te rotate seici. eliembei, substantially .il/f-Yibeil.

.oc-ess lieieiii fleseiibe of dei bien consists m retrieving the actie y baz-li imm the Llui'iiiq tbe lebe-fllig eperatien.

3.7."1 process herein described of clebeliing which consists '1u subjecting" the legs While in e dry starte to e tumbling sei-imi tl'ieieby te i'eirieve the bark froh the legs escl Segre-gating the detached bnrkby gravity et intervals during tile tumbling acties.

ln testimony whereof, .l have signed my name te this specification, in the presence of twe sibseiibing Witnesses GLRRET SCHEN CK.

he legs wiile in e cliy stette by v 

